| description |
|---|
for monitoring the eviroment of Raspberry Pi |
- Raspberry Pi wired DHT22, in this example, we use GPIO27-Pin#13 to connect DHT22, some examples are connected on GPIO4(Pin#7).
{% hint style="info" %}
The DHT22 outputs will be the temperature in msg.payload and the humidity in msg.humidity.
If you have many Raspberry Pi with DHT22, you can design a dashboard, to monitor the environment around the Rasp. {% endhint %}